Hybrid tea rose plant named ‘JACtorob’

ABSTRACT

Hybrid tea rose plant having flowers having a strong, tea rose fragrance, large blooms, hybrid tea bud and open flower form, vigorous, upright, well-branched plant, ease of propagation on its own roots, and near white petal reverse.

Genus and species: Rosa hybrida.

Variety denomination: ‘JACtorob’.

ORIGIN OF THE INVENTION

The present invention relates to a new and distinct variety of a hybridtea rose plant named ‘JACtorob’ which was originated by me by crossingthe variety ‘KRIcarlo’ (U.S. Plant Pat. No. 5,165, seed parent), withthe variety ‘JACsee’ (U.S. Plant Pat. No. 11,138, pollen parent).

BACKGROUND OF THE INVENTION

The primary objective of this breeding was to produce a new hybrid tearose variety having the upright, well-branched growth and hybrid form ofthe female (seed) parent combined with the fragrance and distinctivelight petal reverse of the male (pollen) parent.

BRIEF SUMMARY OF THE INVENTION

The objective was substantially achieved, along with other desirableimprovements, as evidenced by the following unique combination ofcharacteristics that are outstanding in the new variety and thatdistinguish it from its parents, as well as from all other varieties ofwhich I am aware:

-   -   1. Strong, tea rose fragrance.    -   2. Large blooms.    -   3. Hybrid tea bud and open flower form.    -   4. Vigorous, upright, well-branched plant.    -   5. Ease of propagation on its own roots.    -   6. Near white petal reverse.

Asexual reproduction of this new variety by cuttings, as performed atWasco, Calif., shows that the foregoing characteristics and distinctionscome true to form and are established and transmitted through succeedingpropagations.

COMPARISON WITH PARENTS

‘JACtorob’ differs from ‘KRIcarlo’ in flower color (coral for ‘KRIcarlo’versus pink for ‘JACtorob’) and fragrance (little fragrance for‘KRIcarlo’ versus strong fragrance for ‘JACtorob’). ‘JACtorob’ differsfrom ‘JACsee’ in flower color (‘JACtorob’ is much more pink).

COMPARISON WITH SIMILAR VARIETY

The closest variety that the inventor is aware of is ‘JACsee’ (U.S.Plant Pat. No. 11,138). Besides flower color differences, ‘JACtorob’ hasmore petals than ‘JACsee’ (40 to 45 typical for ‘JACtorob’, 25-30typical for ‘JACsee’, so ten more petals for ‘JACtorob’ is typical).‘JACtorob’ is susceptible to powdery mildew in contrast to ‘JACsee’which is resistant to powdery mildew.

BRIEF DESCRIPTION OF THE ILLUSTRATION

The accompanying illustration shows typical specimens of the vegetativegrowth and flowers of this new variety in different stages ofdevelopment, depicted in color as nearly true as it is reasonablypossible to make the same in a color illustration of this character.

DETAILED BOTANICAL DESCRIPTION

The following is a detailed description of my new rose cultivar withcolor descriptions using terminology in accordance with The RoyalHorticultural Society (London) Colour Chart© 2001, except where ordinarydictionary significance of color is indicated.

-   Parentage:    -   -   Seed parent.—‘KRIcarlo’ (U.S. Plant Pat. No. 5,165).        -   Pollen parent.—‘JACsee’ (U.S. Plant Pat. No. 11,138).

FLOWER

Observations were made of plants of the new variety from January 2006 toNovember 2007 growing in a garden environment at Somis, Calif. Theobservations below are from plants that were four years of age at theend of the observation.

-   Blooming habit: Continuous.-   Bud:    -   -   Size.—About 4-6 cm long and 3-4 cm in diameter when the            petals start to unfurl.        -   Form.—The bud form is long, pointed ovoid.        -   Color.—When sepals first divide, bud color is White Group            N155B tipped with Red Group 55B. When half blown, the upper            sides of the petals are base color Red Group 56C with            “handpainting” of Red Group 52B and the lower sides of the            petals are White Group N155B tipped with Red Group 55B.        -   Sepals.—Color: Upper surface: Mainly Greyed-Green Group            191B. With Greyed-Purple Group 184B at base and Apex. Lower            surface: Yellow-Green Group 146B. Length: 25 -30 mm. Width:            12-15 mm. Shape: Subulate. Surface: Upper: Hoary. Lower:            Pubescent. There are three normally appendaged sepals. There            are two unappendaged sepals with glandular and ciliolate            edges.        -   Receptacle.—Color: Yellow-Green Group 144A. Shape: Apple.            Size: Large, about 10 mm long×15 mm in width. Surface:            Smooth.        -   Peduncle.—Length: Short, averaging about 3-5 cm. Surface:            Prickly. Color: Yellow-Green Group 144A. Strength: Stiff,            erect.-   Bloom:    -   -   Size.—Large. Average open diameter is about 12 -14 cm.        -   Borne.—Singly.        -   Stems.—Strength: Normal. Average length is about 30-40 cm            with a diameter of 4-6 mm.        -   Form.—When first open: High centered. Permanence: Becomes            quill fashion.        -   Petalage.—Number of petals under normal conditions: 40-45.        -   Color.—The upper sides of the petals are Red Group 56C with            “handpainting” of Red Group 52B. The reverse sides of the            petals are White Group N155B tipped with Red Group 55B. The            base of the petals has Green-Yellow Group 1B. The major            color on the upper sides is Red Group 52B.        -   Variegations.—“Handpainting” of Red Group 52B as described            above.        -   Discoloration.—The general tonality at the end of the first            day: Red Group 56C with “handpainting” of Red Group 52B. At            the end of the third day: Red Group 52B becomes Red Group            55A. Further aging: Changes to Red-Purple Group N66C by day            5.        -   Fragrance.—Strong, tea rose.-   Petals:    -   -   Thickness.—Thick.        -   Surface texture.—Smooth.        -   Shape.—Obcordate.        -   Margin.—Entire.        -   Apex shape.—Obcordate.        -   Base shape.—Cuneate.        -   Form.—Moderately quilled.        -   Arrangement.—Imbricated.        -   Petaloids.—Number: 5-7. Color: Red Group 56C with            handpainting of Red Group 52B.        -   Persistence.—Petals drop off cleanly before drying.        -   Lastingness.—On the plant: Long (about 7-8 days). As a cut            flower: Long (about 8-9 days).-   Reproductive parts:    -   -   Stamens.—Number: 75-85. Length: 11 mm. Anthers: Length:            3 mm. Color: Yellow-Orange Group 14D. Arrangement: Regular            around styles. Filaments: Color: Yellow Group 9C. Length:            8 mm. Pollen: Color: Greyed-Orange Group 165C.        -   Pistils.—Number: 45-50. Length: 6-8 mm. Styles: Color:            Greyed-Purple Group 186C. Length: 5-7 mm. Stigmas: Color:            Yellow-White Group 158C. Length: 1 mm.        -   Hips.—None observed.

PLANT

-   -   -   Form.—Bush.        -   Growth.—Very vigorous, upright, branching.        -   Age to maturity.—Two years.        -   Mature plant.—Height: 180 cm. Width: 120 cm.        -   Rootstock.—Own root.

-   Foliage: Number of leaflets on normal mid-stem leaves: 5 or 7.    -   -   Size.—Medium. About 130 mm long×70 mm wide.        -   Quantity.—Normal.        -   Color.—New foliage: Upper side: Greyed-Red Group 178A,            quickly turning to green. Lower side: Greyed-Red Group 178B,            quickly turning to green. Old foliage: Upper side: Green            Group 136A. Lower side: Yellow-Green Group 147B.

-   Leaflets:    -   -   Size.—About 35 mm long×25 mm wide.        -   Shape.—Oval.        -   Base shape.—Rounded.        -   Apex shape.—Acuminate.        -   Texture.—Leathery, smooth.        -   Edge.—Serrated.        -   Serrations.—Single.        -   Petiole.—Color: Lower Side: Yellow-Green Group 147B. Upper            Side: Greyed-Purple Group183A.        -   Petiole rachis.—Color: Lower Side: Yellow-Green Group 147B.            Upper Side: Greyed-Purple Group 183A. Underside: Rough with            prickles.        -   Auricles.—Not observed.        -   Stipules.—Length: 20-23 mm, edged with numerous small            glands.        -   Disease resistance.—Resistant to rust, susceptible to            blackspot and mildew under normal growing conditions.        -   Pest resistance.—Nothing observed.        -   Vein color.—Yellow-Green Group 147B.        -   Venation pattern.—Reticulate.

-   Wood:    -   -   New wood.—Color: Yellow-Green Group 146C. Bark: Smooth.        -   Old wood.—Color: Yellow-Green Group 146A. Bark: Smooth.

-   Prickles:    -   -   Quantity.—Ordinary on main canes from base; 10-12 per 15 cm            of cane. Ordinary on laterals from main canes; 10-12 per 15            cm of cane.        -   Form.—Hooked downward.        -   Length.—5-7 mm.        -   Color when young.—Greyed-Purple Group 183D.        -   Color when mature.—Greyed-Orange Group 166B.

-   Small Prickles:    -   -   Quantity.—On main stalks: None observed. On laterals: None            observed.

-   Winter hardiness: Hardy to Zone 5.

1. A new and distinct variety of hybrid tea rose plant, substantially asherein shown and described, characterized particularly by its strong,tea rose fragrance, large blooms, hybrid tea bud and open flower form,vigorous, upright, well-branched plant, ease of propagation on its ownroots, and near white petal reverse.